Mixing faucet



Sept. 24, 1963 1.. w. BILLS ETAL MIXING FAUCET 2 Sheets-Sheet l FiledJune 24, 1960 LL 0V0 W. BILLS ROBERT S. QUES/NBERRV IN VE N 7' OPSHUEBNE'P 8 WORREL 14 77'O/PNEVS /06 30/7 55 m7 G 7O Sept. 24, 1963 1..w. BILLS ETAL MIXING FAUCET 2 Sheets-Sheet 2 Filed June 24. 1960 L LLLOYD w BILLS ROBERT s. QUES/NBERRV IN VE N 7 OR; HUEBNER & WORRELA77'ORNEYS United States Patent 3,104,674 MHXHJG FAUQET Lioyd W. Bills,Downey, and Robert S. Quesinherry,

Southgate, Caiif., assignors to Mark Chemical (Joinpany, NorthHollywood, Calif., a limited partnership Filed June 24, 196i), Ser. No.38,571 9 Claims. (Ci. 137218) The present invention relates to a mixingfaucet and more particularly to a multi-position faucet for selectivelyobtaining predetermined mixtures of various additive fluids and a commoncarrier fluid in response to the positioning of a discharge spout of thefaucet.

The subject invention is concerned with the problem of addingpredetermined amounts of fluid materials to water, or other suitablefluid carrier, in order to obtain a composite fluid having desiredcharacteristics. In washing dishes, for example, various amounts ofliquidsoap, detergent, and/or disinfectant is added to the water toprovide desired solutions. In the past, an estimated amount of theadditive has usually been poured by hand directly from a containerthereof into the water, or perhaps, for greater measuring accuracy,first poured into a measuring vessel. While manual mixing'of this typemay be satisfactory for domestic use, it is inconvenient forrestaurants, taverns, and other public dining and drinkingestablishments, particularly those subject to statutory sanitationrequirements. In such places, laws usually prescribe standards forwashing dishes and tableware, normally requiring washing in a detergentbath and rinsing in water of predetermined temperature and/ ordisinfectant solution. Therefore, it is desirable to obtain solutions ofpredetermined concentrations, conveniently, rap idly, and at relativelyfrequent intervals.

Accordingly, it is an object of the present invention to obtain mixturesof various fluids conveniently, rapidly, accurately, and with a minimumof waste.

Another object is to provide a mixing faucet having a selectivelypositionable spout for obtaining predetermined mixtures of variousfluids with a common fluid, for obtaining the common fluid alone, andfor completely interrupting the discharge of fluid from the faucet.

Another object is to'provide a faucet, having parts mov able betweenvarious positions to enable or to preclude the flow of fluid, andwherein dependable fluid seals are maintained to prevent leakage.

Another object is to enable the complete emptying of the discharge spoutof a faucet subsequent to termination of the flow of fluid through thespout.

Another object is to provide a faucet having a plurality of sets ofpassages adapted for registration and nonregistration respectively toeffect and to preclude fluid flow and wherein flow of fluid through anyset of passages is completely interrupted before flow of fluid isestablished in a different set of passages thereby preventingundesirable intermingling of fluids.

Another object is to provide a faucet of separable parts which are easyto assemble and disassemble, durable, adapted for reorientation forconvenience or greater wear, and which are readily maintained orreplaced.

These, together with other objects, will become more fully apparent uponreference to the following specification and drawings.

In the drawings:

FIG. 1 is a top plan view of a sink and a faucet, embodying theprinciples of the present invention, mounted on the sink with the faucetshown in full lines in a neutral non-mixing position and in dashed linesin laterally angulated mixing positions.

FIG. 2 is a vertical section taken on line 22 in FIG. 1 with a portionof the sink being broken away, and also showing supply tanks connectedto the faucet.

3,l6 4,%74 Patented Sept. 24, 1963 FIG. 3 is a somewhat enlarged,fragmentary, vertical section taken on line 3-3 in FIG. 1 with thefaucet in its central position and with portions of the structure beingbroken away for illustrative convenience.

FIG. 4 is a somewhat enlarged, fragmentary, vertical section takenthrough the faucet on line 44 of FIG. 1 but with the faucet in one ofthe mixing positions, illustrated in FIG. 1.

FIG. 5 is a fragmentary, horizontal section taken on a plane at aposition represented by line 5-5 in FIG. 3.

FIG. 6 is a fragmentary, horizontal section taken on a plane at aposition represented by line 6-6 in FIG. 3.

FIG. 7 is a horizontal section taken on a plane at a positionrepresented by line 7-7 in FIG. 3.

FIG. 8 is a horizontal section taken on a plane at a positionrepresented by line 88 in FIG. 3 and showing parts of thefaucet indashed lines.

Referring more particularly to the drawings, a sink It} includes a leftmixture compartment 11, a center neutral compartment 12, and a rightmixture compartment 13, as seen in FIG. 1. A faucet, embodying theprinciples of the present invention, is generally indicated at 15 andincludes a lower, annular mounting body 17 having a central bore 13 anda lower, internally threaded inlet port 19. A fluid supply pipe 241 isupwardly extended through the rear flange 14 of the sink and is main?tained thereby in an upright position. The supply pipe is screw-threadedinto the inlet port and supports the mounting body in a substantiallyhorizontal position in circumscribing relation to an upright axisconcentric to the central bore. The body is thus disposed in upwardlyspaced relation to the rear flange of the sink. Although not shown, thesupply pipe is adapted for connection to a source of carrier fluid, suchas Water, under pressure.

The mounting body 17 has an upper, inner, annular rim 25; an outer,upper, annular rim 26; and a pair of keys 2.7 inwardly extended from theinner rim in diametrically opposed relation to each other on oppositesides of the central bore 18. A bearing ring 29, preferably but notlimited to SAE 660 bronze or suitable plastic such as Teflon, ispress-fit, or otherwise dependably retained between the inner and outerrims incircumscribing, concentric relation to the bore 18. The ringprovides a flat, upper, bearing surface 30 coplanar with the upper edgesof the rims.

The mounting body 17 also has an internal, fluid supply passagecommunicating with the inlet port 19, and mixing and non-mixing outletports 36 and 37, respectively, upwardly extended from the passagethrough the bearing ring and diametricallyspaced on opposite sides ofthe bore 18. Therefore, the supply passage interconnects the outlet portand the inlet port.

An annular valve seat is screw-threaded in the inlet port 19, as bestillustrated in FIG. 3. A ball-check valve member 46 is located in theinlet port on the opposite side of the valve seat from the supply pipe21. This check valve member is movable between a seated position againstthe valve seat thereby to block passage of fluid from the supply passageinto the supply pipe, and an unseated position spaced upwardly from thevalve seat and incident to pressure of fluid upwardly thereagainst topermit passage of fluid from the supply pipe into the supply passage.

An upper fluid delivery head 59 is supported on the mounting body 17 andincludes a cylindrical, downwardly extended outer flange 51,approximately the same diameter as, and in upwardly adjacent relation tothe outer rim 2-5. The delivery head also has a cylindrical inner boss52 circumferentially inwardly spaced from the flange 51. The bossprovides a peripheral surface 53 and an internally threaded socket 54coaxial with the bore 18. The inner boss also provides a downwardlydisposed intermediate surface 56, and a tongue 57 is radially inwardlyextended from this boss into the socket. The boss further provides anelongated, spring-receiving pocket 58 extended'into the boss from thesurface 56. A bolt 59 is screw-threadably received in the pocket at theopposite end thereof from the surface 56. The fluid delivery head has aplurality of cylindrical cavities 66 extended upwardly therein from itslower surface, between the flange 51 and the inner boss, and intriangular relation to each other about the boss, as best seen in FIG.6. While not to be so limited, three such cavities are provided in theillustrated embodiment.

A pivot bolt 65 includes a lower head 66, an elongated shank 68coaxially upwardly extended through the bore 18 of the mounting body 17and screw-threadably received in the socket 54 of the delivery headthereby being releasably connected to the delivery head. A metal washer69 and a Teflon Washer. 70 are respectively supported on the bolt headin circumsoribing relation to the shank and between the body and thebolt head. i A cylindrical bushing 75 is releasably slidably fitted inthe bore 18 of the mounting body '17 in circumscribing, rotatably fittedrelation to the shank 68 of the pivot bolt 65. The bushing has a lowerbearing portion '76 within which the pivot bolt is free to rotate, andan upper locking portion 77 extended upwardly out of the mounting bodyand providing a pair of diametrically opposite locking notches 7 8, asillustrated -ir1.FIGS. 6 and 7, on opposite sides of the shank of thepivot bolt.

The delivery head 50 provides a plurality of fluid delivery passages 85each having an inlet 86 and an outlet 87. As best seen in FIG. 5, it isto be noted that in the illustrated embodiment, three such passages areprovided, two of the passages being for mixing purposes and being longerthan, and located on opposite sides of a shorter, non-mixing,intermediate passage. The inlets are extended downwardly through thelower surface of the head and are circumferentially spaced around theupper bore 54 individually between the cavities 60 and in triangularrelation with each other, as best shown in FIG. 6. The outlets areextended outwardly through the peripheral surface 53 and are inside-by-side relation to each other, as is evident'in FIGS. 2 and 5.Elongated spouts 88 have straight inner'ends releasably fitted in theoutlets of the delivery passages and dependably retained therein bymeans of set screws 89. The spouts extend outwardly in side-*by-siderelation from the delivery head and provide outer, downwardly turned,ends. The spouts are adapted selectively to extend over the compartments11, 12, and 13 of the sink incident to rotation of the delivery headrelative to the mounting body 17 about an upright axis defined :by thepivot bolt 65.

With reference to FIGS. 3 and 4, mixing and carrier coupling tubes 96and 97, respectively, are releasably fitted in the inlets 36 of thedelivery passages 85. There are two mixing tubes in the illustratedembodiment and these are individually fitted in the inlets of'thelonger, outer delivery passages; the single carrier tube is fitted inthe inlet of the shorter, intermediate delivery passage. The mixingtubes have upper portions 99 upwardly extended from the inlets into thepassages 85 and upper annular rims 109. The tubes also have lower maleportions 101 downwardly extended from the inlets between the boss 52 andthe outer flange 51 but terminated upwardly from the surface 56. It isto be noted that the carrier coupling tube has only a lower male portion101 downwardly extended like the mixing tubes and does not provide anupper portion, as 99, like the mixing tubes. Upper and lower, axiallyspaced, O-rings 102 circumscribe the coupling tubes, the upper O-ringsbeing in fluid sealing engagement between the tubes and the deliveryhead 50 within the inlets while the lower O-rings are around the lowermale portions of the tubes. Perforate brackets 183 are rigidly securedto the delivery head within the outer delivery passages and dependablyreceive the upper portions of the tubes below said rims lllil.

A sealing ring 1e4- of rigid material concentricallycircumscribes thepivot bolt 65 between the outer flange 51 ment between the tubes and thesealing ring within the coupling sockets. The ring provides a pair ofmixing apertures 107 and asi-ngle non-mixing aperture 1&8concentrically, individually, downwardly extended from the? couplingsockets through the sealing surface of the ring. Although the ring ismovable toward and away from the delivery head and the mounting body 17,compressionsprings 199 are individually fitted in the cavities 60 andbear against the sealing ring yieldably urging the sealing surface intofluid-tight engagement with the bearing sur face 36. With reference toFIG. 6, the springs are in triangular relation about the pivot bolt 65and are individually located between the apertures 108 and 109. That is,they are located at the corners of an imaginary, equi lateral triangle.The slidably interfitted, coupling tubes and sockets therebyinterconnect the apertures in the ring with their respective deliverypassages 85. Also, the

coupled tubes and sockets connect the sealing ring to the delivery headfor unitary rotation relative to the mounting body.

An annular index plate 110 is rotatably circumscribingly fitted aboutthe locking portion 77 of the bushing 75,,

as best seen in FIGS. 3 and 7, and is releasably fitted within the innerrim 25 of the mounting body 17. The plate has diametrically related,outwardly opening,

notches 111 releasably receiving the keys 27 thereby precluding rotationof the index plate relative to the body. The plate also provides aplurality of upwardly disposed,

fractionally spherical indentations 112a, 112b, 1120, and

112d having centers lying on a common circle concentric to the pivotbolt 65 and being spaced circumferentially of the bolt. The radius ofsaid common circle is substantially equal to the radial distance betweenthe longitudinal axis of the pocket 58 and the pivot bolt. An elongated,detent compressionspring 114 is positioned in the pocket and has aninner end portion engaging the adjusting bolt 59 and an outer endportion. A substantially spherical detent 115, of smaller diameter thanthe pocket and partially located therein, is fitted in the outer endportion of the detent spring and resiliently, yieldably urged therebyagainst the index plate. one of the indentations 112 is axiallyaligned-with the pocket, the detent is spring-urged into the indentationThe spring is yieldable, however, to permit rotation of the head 56relative to the body 17 whereby the detent rides upwardly out of anindentation for movement in a circular path, defined by said commoncircle, successively into and out of the other indentations. As believedevident, there is a distinctive click as the detent drops into eachindentation. Reception of the detent in any one of the indentationsserves to resist rotation of the head relative to the body. therebydependably to latch or maintain the head in a series of selectedpositions relative to the body unless forcibly displaced.

With reference to FIG. 7, it is to be noted that the axes of the outletports 36 and 37 lie in a first common plane bisecting the body 17 andpassing diametrically through the flange 51. With the index plate 110fitted within the inner rim 25 by the mating of the keys 27 and thenotches 111, the indentations 112b are also bisected by this plane. Theindentations 112a and 112s are respectively located on imaginery radiallines emanating from the axis of the pivot bolt 65 and substantiallyequal- As best ly angularly spaced from said common plane.

When any illustrated in FIG. 5, imaginery radial lines passing'outwardlyfrom the pivot bolt through the mixing tubes 96 are substantiallyequally angularly spaced from a second common plane, diametricallypassing through the nonmixing tube 97, the pocket '58 and detent 115,and the cavity 69 located between said mixing tubes, by angular amountssubstantially equal to the angle between the radial lines of theindentations 112a and 1120 and said second common plane. In theillustrated embodiment, this common angle is fifty degrees and isindicated by the capital letter A. Obviously the invention is notlimited to this precise angle. It is now believed evident that thenon-mixing tube 97 is equidistantly circumferentially spaced from themixing tubes by an angle B comple-. mentary to angle A. Further, theoutlet ports 35 and 37 and the inlet apertures 1&7 and 183 are allsubstantially equally radially spaced from the pivot bolt 65.

The delivery head 50 is rotatable relative to the mounting body 17 aboutthe axis of the pivot bolt 65 into a neutral non-mixing position, shownin FIGS. 1, 2 and 3, with the detent 115 in one of the indentations11212, the non-mixing aperture 1% in precise registration with thenon-mixing outlet port 37, and with the spouts 88 forwardly projectedfrom the faucet 15 over the center compartment 12 of the sink 10. Inthis position, bothof the mixing apertures 107 are spaced from theoutlet port 36. From said neutral position, the head is rotatable inopposite directions into a pair of mixing positions, fifty degreesdisplaced on either side of the neutral position in the illustratedembodiment, with the detent respectively fitted in one of theindentations 112:: or 112a immediately adjacent to said indentation112b, with-one of the mixing apertures 167 in precise registration withthe mixing outlet port 36, and with the spouts 88 extended over one ofthe left or right compartments 11 or 13 of the sink; in either of themixing positions, the non-mixing aperture and outlet port 37 are offsetfrom each other. It is to be observed that in moving through these threepositions, only three of the indentations are employed. Additionalindentations are provided so that the index plate 11% can simply bereleased from the keys 27 and rotated through one hundred and eightydegrees on the pivot bolt 65 when one side of the index plate becomesworn. The provision of these other indentations also facilitatesassembly of the faucet and allows the head initially to be mounted onthe body with the spouts extended on the same or opposite side of thepivot bolt from the inlet port 19.

It is significant to note that the sealing ring 1% is yieldably urgedinto fluid-tight engagement with the bearing ring 29 by the springs 169during the described rotatable positioning of the delivery head Thisprevents leakage of fluid outwardly between the sealing and bearingrings from the ports 36 and 37. It is also to be noted that'in movementof the body between its respective mixing and non-mixing positions,registration between the outlet ports 36 or 37 and the apertures 1117and 168 is completely interrupted before registration is re-establishedbetween any other port and aperture. Thus, between said predeterminedmixing and non-mixing positions, the sealing ring covers the outletports and completely interrupts flow of fluid upwardly therethrough fromthe fluid supply passage 35.

With reference to FIG. 4, the delivery head 50 provides a pair ofupwardly extended, annular shoulders 12%, circumscribing vent openings121. Annular valve seats 122 are screw-threadably fitted in theshoulders in circumscribing relation to the vent openings and provideair passageways 123 opening outwardly to the atmosphere. Vent caps 124are secured to the valve seats by means of rivets 125 and provideannular skirts downwardly extended in circumferentially spaced relationto the valve seats and in outwardly spaced relation to said airpassageways whereby flow of air is permitted into and out of thedelivery passages but entry of dirt and other foreign particles into thepassages is minimized.

With continued reference to FIG. 4, elongated guide pins 13s are rigidlysecured to the valve seats 122 and extended coaxially downwardly in thevent openings 121. Circular valve discs 131, preferably of resilientlycompressible material such as rubber, are fitted in the vent openingsfor axial movement therein between lower posiions in fluid-tightengagement with their respectively adjacent rims 1% and upper positionsin fluid-tight engagement with their respectively adjacent valve seats.Tubular hubs 132 are concentrically upwardly extended from the valvediscs and axially slidably receive the guide pins for guiding said axialmovement of thevalve discs between their upper and lower positions.

Tubular venturis 138 are individually fitted in the delivery passages 35between the inlets as and outlets 87 thereof. Each venturi has an inletbore 139 disposed toward the inlet of its passage, an outlet bore 1461directed toward its respective outlet, and a constricted throat 142.O-rings circumscribe the venturis andare in fluidtight engagement withthe delivery head about the passages 35. Each venturi also has anadditive inlet port 147 opening upwardly from and communicating with itsrespective throat.

The delivery head 5% provides raised portions upwardly extended abovethe venturis 138 and additive inlet bores 156 in said raised portionscommunicating with the additive inlet ports 147. Tubular intake fittings158 are screw-threaded in the bores 1'56 and extend upwardly from theraised portions. Elongated, flexible hoses 16thv are releasably slidablyfitted in fluid-tight relation over the fittings. Orifice members 16 2are releasably fitted within the hoses and provide restricted orifices163 of predetermined cross-sectional area directed toward the fittings.The hoses are individually connected to containers of fluid additives,such as a disinfectant and a detergent, located below the faucet 15, asshown in FIG. 2. i

Operation The operation of the described embodiment of the subjeetinvention is believed to be readily apparent and is briefly summarizedat this point. It is assumed that the subject faucet 15 is used in arestaurant where it is neces sary to wash dishes in a detergent solutionand thereafter to rinse the dishes in a disinfectant solution as well asin plain water. Accordingly, the hoses 169 are individually connected tocontainers 170 of liquid detergent and liquid disinfectant and thecontainers located below the faucet. It is to'be noted that thecontainers are otherwise open to atmospheric pressure. a The supply pipe21 is connected to a source of plain water under pressure andcontrollable by means of a valve, not shown.

In order tofill the center compartment 12 with plain water, the deliveryhead 50 is rotated into its non-mixing, neutral position with the spouts88 extended over the center compartment. The valve, not shown, in thesupply pipe 21 is turned on whereby plain water under pressure passesupwardly through the inlet port 19 unseating the ball-check valve member46, and thence directly upwardly into the non-mixing delivery passage 85through the non-mixing coupling tube 97, and thence outwardly fordischarge into the center compartment through the center spout. Inasmuchas the carrier fluid does not enter either of the mixing or outerdelivery passages 85,nei-t her de tergent nor disinfectant is drawn intothese delivery passages and no fluid is discharged from either sidespout. The flow of plain carrier fluid into the center compartment isinterrupted by rotating the delivery head to an intermediate positionbetween the neutral non-mixing position and either side mixing position,or by turning ofi the valve, not shown, in the supply pipe.

In order to discharge a detergent solution into the left compartment 11,for example, the delivery head 50 is 7 swung to the left, as viewed inFIG. 1, into its mixing position with the spouts 88 extended over theleft compartment. This brings the mixing aperture 107, associated wtihthe left spout and delivery passage 85, into registration with themixing outlet port 36, as viewed in FIG. 4. The delivery head isreleasably retained in this position by the detent 115. Carrier fluidflows from the supply passage 35 upwardly through the registeringcoupling tube 96 and outlet port 36, and into the delivery passage. Inso doing, carrier fluid forces the valve disc 1'31 upwardly intoengagement with the valve seat 122 to block flow of fluid upwardlythrough the vent opening 121. Carrier fluid under pressure thus passesdownwardly around the bracket 102 and is forced through the venturi 13 8to create a low pressure in the throat 142 of the venturi. Atmosphericpressure thereby forces detergent solution from its container 170upwardly through the hose 1 60 and the associated orifice member 16-2into the venturi. The detergent is mixed with the carrier fluid and thecomposite fluid mixture discharged into the left compartment of the sink10 through the left spout.

As before, the flow of detergent solution from the spout 88 is turnedoff either by shutting off the flow of carrier fluid in the supply pipe21 or by rotating the delivery head 50 out of its mixing position. Inthe latter event, registration between the coupling tube 96 and themixing outlet port 36 is interrupted. With pressure relieved from underthe raised valve disc 1-31, the latter descends into its lower positionin fluid-tight engagement with the upper rim 100 of the coupling tube.This allows air to enter the delivery passage .85 through the passageway123, the vent opening 121, and around the bracket 102, thereby assuringcomplete emptying of both carrier fluid and detergent from the spout. Inother words, a partial vacuum is not created in the delivery passageback of the venturi. Also, seating of the valve member 46, when thecarrier water pressure is turned oif, restricts reverse flow of fluidand facilitates seating of the valve disc 131 thereby more quickly andpositively to open the delivery passage to atmospheric pressure. Sincethe flow of detergent in the hose 160 is interrupted, there is nofurther discharge of detergent into the ventuni.

It is believed evident that a solution of disinfectant can be dischargedinto the right compartment 13 of the sink 10 simply by swinging thedelivery head 50 into its right mixing position, as viewed in FIG. 1. Itis to be noted that the amount of additive drawn into each venturi 13-8can readily be varied by proper selection of its respective orificemember 162. That is, orifice members with larger or smaller orifices 163are selected depending on Whether more or less additive is desired. Oncethe desired proportion of additive to carrier is established and theproper orifice member inserted, solutions of disinfectant, detergent, orother materials, of desired concentration can be conveniently,accurately, and rapidly obtained simply by swinging the delivery headinto its mixing positions.

From the foregoing, it will be understood that a mixing faucet has beenprovided which enables the mixing of various fluids individually andselectively with a oom' mon carrier fluid or the obtaining of thecarrier fluid alone. The faucet provides the mixing and discharge of thecomposite fluids in a convenient, rapid, and accurate manner and with nowaste or spillage of fluid. Also, if desired, the faucet is movable toa. position where flow of fluid is completely interrupted. fsignificance, the

faucet breaks the flow of fluid out of any given spout and interruptsmixing action before flow of fluid is initiated in any other spout sothat there is no undesired intermingling of fluids.

Although the invention has been herein shown and described in what isconceived .to be the most practical and preferred embodiment, it isrecognized that departures may be made therefrom within the scope of theinvention, which is not to be limited to the details disclosed hereinbut is to be accorded the full scope of the claims I so as to embraceany and all equivalent devices and apparatus.

Having described our invention, what we claim as new and desire tosecure by Letters Patent is:

1. A faucet for selectively and individually mixing a plurality ofadditive fluids with a common carrier fluid comprising a mounting bodyhaving a fluid supply passage adapted for connection to a source of suchcarrier fluid under pressure and providing an outlet port; a fluiddelivery head having a plurality of elongated mixing passages eachhaving an inlet, and an outlet spaced longi-j tudinally of its passagefrom the inlet; means interconnectiug the head and the body for movementbetween positions with said inlets alternately and individually inregistration with the outlet port; and venturis individually positionedin the mixing passages between their respective inlets and outlets andhaving constricted throat port-ions, the head having additive inletsindividually opening into the throat portons of the venturis andindividually adapted for connection to sources of additive fluidswhereby carrier fluid passing through each of said venturis drawsadditive fluid into the mixing passages for mixture with f the carrierfluid when its respective inlet is in registration with the outlet port.

2. The faucet of claim 1 wherein the head has a plu 7 rality of ventsindividually opening from the. passages to the atmosphere between theirrespective venturis and inlets; and including valve means mounted in thepassages of the body for movement between positions closing theirrespective vents incident to the flow. of fluid from their respectiveinlets to their respective outlets and positions opening the ventsincident to the interruption of said fluid flow thereby to preclude theformation of a vacuum in their respective passages between the venturisand the inlets and thereby to permit complete emptying of .flu-id y fromtheir respective outlets.

3. T he faucet of claim 2 including a check valve mount ed in the supplypassage of the body and movable between an open position incident to theflow of fluid from the supply passage to the outlet port and a positionre stricting reverse flow of fluid from the outlet port back into thesupply passage thereby to facilitate opening of said valve meansincident to said interruption of the fluid flow.

4. A faucet for selectively and individually mixing a plurality ofadditive fluids with a common carrier fluid comprising a lower mountingbody having. a flat, upper bearing surface, and a fluid supply passageadapted for connection to a source of such carrier fluid under pressureand providing an :outlet port in said surface; an up-- per fluiddelivery 'head having a lower surface and including a plurality ofelongated mixing passages, each mixing passage having an inlet, and anoutlet spaced longitudinally from the inlet, the inlets of the mixingpassages being extended downwardly through the lower surface of thehead; means interconnecting the head and the body in such a manner thatsaid lower surface of the head and said upper bearing surface of thebody are in opposed relation to each other for movement betweenpositions with said inlets alternately and individually registrationwith the outlet port; and venturis individually positioned in the mixingpassages between their respective inlets and outlets and havingconstricted throat portions, the head having additive inletsindividually opening into the throat portions of the venturis andindividually adapted for connection to sources of additive fluidswhereby carrier fluid passing through each of said venturis drawsadditive fluid into the mixing passages for mixture with the carrierfluid when its respective inlet is in registration A i with the outletport.

5. In combination with a pair of containers of additive fluid open tothe atmosphere and a support, a faucet for selectively and individuallymixing the additive fluids with a common carrier fluid comprising amounting body san ers borne by the support and having a fluid supplypassage adapted for connection to a source of such carrier fluid underpressure and providing an outlet port; a fluid delivery head having aplurality of elongated mixing passages each having an inlet, and anoutlet spaced longitudinally from the inlet; means interconnecting thesad and the body for movement between positions with said inletsalternately and individually in registration with the outlet port;venturis individually positioned in the mixing passages above thecontainers between their respective inlets and outlets and havingconstricted throat portions, the head having additive inletsindividually opening into the throat portions of the venturis; and fluidconducting ducts individually interconnecting the containers and theadditive inlets whereby carrier fluid passing through said venturisdraws additive fluid into their respective mixing passages for mixturewith the carrier fluid when its respective inlet is in registration withthe outlet port.

6. The combination of claim including orifice members releasahly fittedin the ducts having restricted orifices of predetermined diameter forcontrolling the quantity of additive drawn into the mixing passages.

7. A faucet for selectively controlling the flow of a carrier fluid andthe mixing of an additive fluid with the carrier fluid comprising amounting body having a fluid supply passage adapted for connection to asource of such carrier fluid under pressure and providing an outletport; a fluid delivery head havin a plurality of elongated fluid flowpassages, including at least one elongated mixing passage, each passagehaving an inlet and an outlet spaced longitudinally of its passage fromthe inlet; means interconnecting the head and the body for movementbetween positions with said inlets alternately and individually inregistration with the carrier fluid outlet port; and a venturipositioned in the mixing passage between its respective inlet and outletand having a constricted throat portion, the head having an additiveinlet opening into said throat portion and adapted for connection to asource of additive fluid whereby carrier fluid passing through saidventuri draws additive fluid into the mixing passage for mixture Withthe carrier fluid when its respective inlet is in registration With theoutlet port.

8. A faucet for se'lcctively'controlling the flow of a carrier fluid andalso the mixing of an additive fluid with the carrier fluid comprising amounting body having a fluid supply passage adapted for connection to asource of such carrier fluid under pressure and providing an outletport; a fluid delivery head having a plurality of elongated fluid flowpassages, including at least one elongated mixing passage, each passagehaving an inlet and an outlet spaced longitudinally of its passage fromthe inlet, means interconnecting the head and the body for movementbetween positions with said inlets alternately and individually in fluidcommunication With the carrier fluid outlet port; a source of supply ofadditive fluid; conduit means interconnecting said additive fluid sourceand said mixing passage at a point intermediate its respective inlet andoutlet; and flow control means disposed in communication with saidmixing passage, arranged in control relationship with said additivefluid conduitmeans, and being responsive to carrier fluid flowingthrough said mixing passage 7 thereby to introduce additive fluid intothe mixing passage for mixture with the carrier fluid when therespective inlet of said mixing passage is in communication with theoutlet port.

9. A faucet for selectively controlling the flow of a common carrierfluid and individually mixing a plurality of additive fluids with thecommon carrier fluid comprising a mounting body having a fluid supplypassage adapted for connection to a source of such carrier fluid underpressure and providing an outlet port; a fluid delivery head having aplurality of elongated fluid flow passages, including a plurality ofelongated mixing passages, each passage having an inlet and an outletspaced longitudinally of its passage from the inlet; meansinterconnecting the head and the body for movement between positionswith said inlets alternately and individually in communication with thecarrier fluid outlet port; a plurality of individual sources of supplyof additive fluids; conduit means individually interconnecting each ofsaid additive fluid sources and a respective one of said mixing passagesat a point intermediate its respective inlet and outlet; and a pluralityof flow control means, each individually disposed in communication witha respective one of said mixing passages, arranged in controlrelationship with a respective one of said additive fluid conduit meansand being responsive to carrier fluid flowing through its respectivemixing passage thereby to introduce additive fluid into said respectivemixing passage for mixture With the carrier fluid when the respectiveinlet of said respective mixing passage is in communication with theoutlet port.

References Qited in the file of this patent UNITED STATES PATENTS674,188 Schratz May 14, 1901 1,939,141 Sohultis Dec. 12, 1933 2,303,037Fredrickson Nov. 24, 1942 2,376,565 Williams May 22, 1945 2,469,921 HogeMay 10, 1949

1. A FAUCET FOR SELECTIVELY AND INDIVIDUALLY MIXING A PLURALITY OFADDITIVE FLUIDS WITH A COMMON CARRIER FLUID COMPRISING A MOUNTING BODYHAVING A FLUID SUPPLY PASSAGE ADAPTED FOR CONNECTION TO A SOURCE OF SUCHCARRIER FLUID UNDER PRESSURE AND PROVIDING AN OUTLET PORT; A FLUIDDELIVERY HEAD HAVING A PLURALITY OF ELONGATED MIXING PASSAGES EACHHAVING AN INLET, AND AN OUTLET SPACED LONGITUDINALLY OF ITS PASSAGE FROMTHE INLET; MEANS INTERCONNECTING THE HEAD AND THE BODY FOR MOVEMENTBETWEEN POSITIONS WITH SAID INLETS ALTERNATELY AND INDIVIDUALLY INREGISTRATION WITH THE OUTLET PORT; AND VENTURIS INDIVIDUALLY POSITIONEDIN THE MIXING PASSAGES BETWEEN THEIR RESPECTIVE INLETS AND OUTLETS ANDHAVING CONSTRICTED THROAT PORTIONS, THE HEAD HAVING ADDITIVE INLETSINDIVIDUALLY OPENING INTO THE THROAT PORTONS OF THE VENTURIS ANDINDIVIDUALLY ADAPTED FOR CONNECTION TO SOURCES OF ADDITIVE FLUIDSWHEREBY CARRIER FLUID PASSING THROUGH EACH OF SAID VENTURIS DRAWSADDITIVE FLUID INTO THE MIXING PASSAGES FOR MIXTURE WITH THE CARRIERFLUID WHEN ITS RESPECTIVE INLET IS IN REGISTRATION WITH THE OUTLET PORT.